| article html file updated | 6 February 2020 11:21 CET | Update | https://www.mdpi.com/2071-1050/6/8/5107 |
| article html file updated | 7 May 2019 10:00 CEST | Update | - |
| article html file updated | 21 March 2019 22:46 CET | Update | - |
| article html file updated | 20 August 2015 14:56 CEST | Original file | - |
| article pdf uploaded. | 12 August 2014 13:51 CEST | Updated version of record | https://www.mdpi.com/2071-1050/6/8/5107/pdf |
| article pdf uploaded. | 11 August 2014 10:34 CEST | Version of Record | https://www.mdpi.com/2071-1050/6/8/5107/pdf-vor |
